Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
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Before
AfterFast, Reliable Duct Sealing Across South Apopka
Your ducts are leaking. Maybe you’ve noticed the second bedroom stays ten degrees hotter than the rest of the house, or your energy bill climbed forty dollars last month with no explanation. In South Apopka, where the humid air off Lake Apopka pushes your HVAC system to run nearly year-round, even a small gap in your ductwork bleeds money and comfort every single day. We seal ducts in homes from the older neighborhoods near Plymouth Sorrento Road to the manufactured housing communities off Orange Blossom Trail, and we know the specific headaches this climate creates. Our Duct Sealing team dispatches from our Miami office, but South Apopka is a regular stop on our Central Florida route. Call (361) 326-5060 and we’ll get you a written quote before any work starts.
Why Hollis Air Duct Cleaning Is South Apopka’s Preferred Duct Sealing Company
We’ve been sealing ducts in South Apopka long enough to recognize the greenish film that shows up inside return plenums after east winds blow across Lake Apopka. That algae-laden residue isn’t typical household dust, and sealing ducts against it requires different prep than you’d need inland. Our crews carry mastic rated for humid subtropical conditions, not the standard compound that cracks after two Florida summers.
South Apopka homeowners leave reviews mentioning the same things: we show up inside the window, we explain what we found before we quote, and the price on the paper matches the price at the end. Our 365-Day Done Right Promise means if a seal fails within a year, we come back and fix it free, including the second visit. No negotiation, no runaround.
Phones get answered by a live person, 24 hours a day. When you’re trying to figure out why your AC runs constantly and your bedroom still feels swampy, you don’t want voicemail.
Duct Insulation in South Apopka
Duct Insulation in South Apopka addresses a problem most homeowners don’t know they have: sweating metal. In our humid climate, cool air moving through uninsulated ductwork in a hot attic causes condensation that drips onto insulation, breeds mold, and eventually rots ceiling drywall. We see this constantly in the 1950s-era ranch homes near Old Dixie Highway, where original fiberboard ducts were never wrapped and have been dripping for decades.
A typical duct insulation job in South Apopka runs $850 – $1,400 for a single system, depending on how much accessible ductwork needs wrapping and whether we’re replacing degraded existing insulation. We use fiberglass wrap with a vapor barrier, sealed at every seam with aluminum tape, not the cheap stuff that peels in six months.
When Attic Ducts Sweat
If your attic insulation has dark spots or your ceiling shows water stains directly below a duct run, you’ve got condensation. We strip off the old soggy wrap, treat any surface mold with an EPA-registered solution, and install new insulation with proper vapor sealing. In South Apopka’s climate, this isn’t optional maintenance; it’s what keeps your ceiling intact.
Manufactured Home Duct Runs
Many manufactured homes near South Apopka’s Orange Blossom Trail corridor use thin flex duct that loses both temperature and structural integrity after fifteen years. We replace collapsed sections and insulate the new runs properly, since these homes often have minimal attic clearance and every degree of cooling loss matters more.
HVAC Duct Sealing in South Apopka
HVAC Duct Sealing in South Apopka stops the conditioned air you’re paying for from escaping into your attic, crawl space, or wall cavities. We pressure-test the system first, then seal every joint, seam, and penetration with mastic or foil-backed tape rated for your operating temperatures. A typical whole-system seal in South Apopka runs $1,200 – $2,100, with smaller partial repairs starting around $450 if we’re addressing a specific known leak.
The lake effect here makes this work especially important. When your return ducts pull air through gaps near soffits or attic vents, they’re not just drawing hot attic air; they’re pulling in pollen, algae spores, and whatever’s drifting off Lake Apopka that day. Sealing the envelope of your duct system is also sealing out that biological load.
Pressure Testing Before Sealing
We use a duct blaster or calibrated fan to measure leakage in CFM25, cubic feet per minute at 25 pascals of pressure. Most South Apopka homes we test leak 20 – 35% of total airflow, well above the 10% maximum recommended by ACCA standards. You get the before number, the after number, and a written report.
Mastic vs. Tape Applications
We apply brush-grade mastic to irregular joints and fiberboard connections, and foil-backed butyl tape to smooth metal seams. In South Apopka’s humidity, tape alone fails; mastic alone can crack on vibration points. Our crews know which to use where because they’ve sealed ducts in this specific climate for years.
Trusted Brands We Service in South Apopka
Our vans carry sealing and insulation materials from Guardsman and Abatement Technologies, plus rotary brush systems from Rotobrush for pre-sealing cleaning when ducts are contaminated. We stock mastic, tape, and insulation wrap locally so South Apopka jobs don’t wait on Miami deliveries. If your system uses Honeywell or Aprilaire filtration components, we can inspect and reinstall them properly after sealing work, since disturbed duct runs often knock filters out of alignment. The equipment matters less than how it’s applied, but using commercial-grade materials means the seal holds up when your attic hits 130 degrees in July.
Common Duct Sealing Problems We See in South Apopka Homes
- Original fiberboard ductwork from the 1960s – 1980s. These homes near Plymouth Sorrento Road and Old Dixie Highway have duct systems that were never designed to last fifty years. The board delaminates, the seams gap, and the internal lining sheds particles into the airflow. We seal what we can and flag what needs replacement.
- Flex duct crushed by decades of attic traffic. South Apopka’s older homes often have attics that became storage spaces after the original build. Flex duct gets stepped on, kinked, or completely flattened. We restore proper diameter and seal the connections so air actually moves.
- Return air pathways pulling from wall cavities. In manufactured homes and some older site-built houses, builders used wall studs or floor joist bays as return channels instead of actual ductwork. These leak continuously, draw in insulation particles, and bypass filtration entirely. We retrofit proper sealed returns.
- Lake Apopka algae infiltration in return plenums. After strong east winds, we find greenish film coating the inside of return-air boxes. The ductwork isn’t just dirty; it’s hosting biological material that recirculates. Sealing the plenum and surrounding penetrations keeps new contamination out, though we often recommend Air Duct Cleaning in South Apopka first if the buildup is severe.
Pricing for Duct Sealing in South Apopka, FL
Whole-system duct sealing in South Apopka typically runs $1,200 – $2,100. Partial sealing of a specific problem zone, like a damaged trunk line or disconnected flex run, usually falls between $450 and $850. Duct insulation wrapping adds $850 – $1,400 on top of sealing if your attic ducts need both services.
What moves the number: accessibility (crawling through a 120-degree attic versus a walk-in space), extent of leakage found during pressure testing, and whether we need to clean contamination before mastic will adhere properly. We also handle Dryer Vent Cleaning in South Apopka if your vent routing shares attic space with ductwork and needs attention too.
Every price is written down before we start. No per-vent add-ons, no “we found another problem” surprises at the door. Estimates are free. Call (361) 326-5060.
We Also Serve Cities Near South Apopka
Our crews regularly work in Jacksonville, Miami, Tampa, and Orlando, with scheduling coordinated from our Miami office. If you’re in South Apopka proper, you’re on our direct route; if you’re in a nearby suburb, we can usually book you within the same week. Duct Sealing in South Apopka remains our focus here, but the same standards and pricing structure apply across our Central and North Florida service areas.
Serving South Apopka, FL - Our Local Coverage Area
We’re based in the South Apopka area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Duct Sealing in South Apopka
We typically schedule South Apopka appointments within 3 – 5 business days, with written confirmation of your arrival window. Call (361) 326-5060 for next available dates.
Yes, including the areas near Plymouth Sorrento Road, Old Dixie Highway, and the manufactured home communities along Orange Blossom Trail. We know the specific duct configurations common to each housing type.
We don’t advertise emergency dispatch for duct sealing because it’s a scheduled repair, not an immediate safety issue. If your system has completely failed, we can inspect within 24 – 48 hours and seal as part of the restoration.
Pricing is consistent across our Central Florida market; we don’t charge a premium for South Apopka. A whole-system seal runs the same $1,200 – $2,100 range in both cities.
Every seal is covered by our 365-Day Done Right Promise. If any sealed joint fails within a year, we return and repair it at no charge, including the second visit. This is written on your invoice, not implied.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving South Apopka under The Garrison Standard.